multiple domains

[Tom Frey]

I want to setup my mailserver to handle mutliple domains. But the problem is the pop server...   Let's assume i have 2 domains hosted and every domain has a user called postmaster... what to do? Is there any way to define them for different domains?   I also tried to set my usernames to: [EMAIL PROTECTED] but qpopper seems not to pass usernames containing an " @ ".   thx tom